jul 202013
How Mars' Atmosphere Got So Thin

    New insights from Curiosity    A pair of new papers report measurements of the Martian atmosphere’s composition by NASA’s Curiosity rover, providing evidence about loss of much of Mars’ original atmosphere. One of Vikings global mosaics of Mars, re-sized & sharpened by Jason Harwell of the Viking mission team. Image Credit: NASA/JPL Curiosity’s Sample [continue reading]

nov 032012
Does Little Methane on Mars Mean It Was Never Habitable?

  NASA’s car-sized rover, Curiosity, has taken significant steps toward understanding how Mars may have lost much of its original atmosphere.  If the atmosphere of Mars contains methane, various possibilities have been proposed for where the methane could come from and how it could disappear.  Potential non-biological sources for methane on Mars include comets, degradation [continue reading]